The equation shows the effect of heat on the salt ammonium chloride. Which statement is TRUE about this reversible reaction? [am-9]

the gases formed are colourless

the formation of the solid is endothermic

ammonium gas is formed

chloride gas is formed

The equation shows the effect of heat on the salt ammonium chloride. Which statement is TRUE about this reversible reaction? [am-10]

the gases formed are colourless and green

the formation of the solid is exothermic

ammonium gas is formed

chloride gas is formed

The equation shows the effect of heat on the salt ammonium chloride. Which statement is TRUE about this reversible reaction? [am-11]

the gases formed are colourless and green

the formation of the solid is endothermic

ammonia gas is formed

chloride gas is formed

The equation shows the effect of heat on the salt ammonium chloride. Which statement is TRUE about this reversible reaction? [am-12]

the gases formed are colourless and green

the formation of the solid is endothermic

ammonium gas is formed

hydrogen chloride gas is formed

The equation shows the effect of heat on the salt ammonium chloride. Which statement is TRUE about this reversible reaction? [am-13]

the gases are formed by an endothermic reaction

the formation of the solid is a decomposition reaction

ammonium gas is formed

chloride gas is formed

The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-14]

the forward reaction (L to R) is exothermic

on heating, the hydrated solid changes colour from blue to white

the heating effect can be used as a test for water

the reaction is not reversible

The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-15]

the forward reaction (L to R) is exothermic

on heating, the hydrated solid changes colour from white to blue

the reverse reaction can be used as a test for water

the reaction is not reversible

The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-16]

the forward reaction (L to R) is exothermic

on heating, the hydrated solid changes colour from white to blue

the heating effect can be used as a test for water

the reaction is reversible

The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-17]

the forward reaction (L to R) is endothermic

on cooling the heated solid and adding water, it changes colour from blue to white

the heating effect can be used as a test for water

the reaction is not reversible

The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-18]

the reverse reaction (R to L) is endothermic

on cooling the heated solid and adding water, it changes colour from white to blue

the heating effect can be used as a test for water

the reaction is not reversible

The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-19]

the forward reaction (L to R) is exothermic

on cooling the heated solid and adding water, it changes colour from blue to white

the reverse reaction (R to L) is exothermic

the heating effect can be used as a test for water

The equation shows the effect of heat on the salt hydrated copper(II)
sulfate. Which statement is TRUE about this reversible reaction? [am-20]

the forward reaction (L to R) is exothermic

on cooling the heated solid and adding water, it changes colour from blue to white

the reverse reaction (R to L) is endothermic

the heating effect can be used to make anhydrous copper(II)
sulfate

The in the equation means the reaction is? [am-57]

reversible

decomposable

combustible

unpredictable

Which is TRUE about reversible reactions that have formed a chemical equilibrium? [am-93]

reactants are always changing into products

rate of forward reaction (L to R) is greater than the rate of the backward reaction (R to L)

the concentrations of reactants and products are constantly changing

using a catalyst increases the final amount of product formed

Which is TRUE about reversible reactions that have formed a chemical equilibrium? [am-94]

products stop changing into reactants

rate of forward reaction (L to R) is equal to the rate of the backward reaction (R to L)

the concentrations of reactants and products are constantly changing

using a catalyst increases the final amount of product formed

Which is TRUE about reversible reactions that have formed a chemical equilibrium? [am-95]

products stop changing into reactants

rate of forward reaction (L to R) is greater than the rate of the backward reaction (R to L)

the concentrations of reactants and products remain the same

using a catalyst increases the final amount of product formed

Which is TRUE about reversible reactions that have formed a chemical equilibrium? [am-96]

products stop changing into reactants

rate of forward reaction (L to R) is greater than the rate of the backward reaction (R to L)

the concentrations of reactants and products are constantly changing

using a catalyst does not increase the final amount of product formed

What is a typical pressure range in the operating conditions for the manufacture of ammonia by the Haber process? [am102]

200 to 400 atm.

1 to 10 atm.

50 to 100 atm.

600-800 atm.

What is a typical temperature range in the operating conditions for the manufacture of ammonia by the Haber process? [am103]

25 to 100oC

300 to 450oC

100 to 200oC

500 to 800oC

Which metal is used in making catalysts for the Haber synthesis of ammonia? [am104]

copper

sodium

iron

gold

For reactions to occur, the particles of the reactants must collide. The fewer the collisions that take place, the slower the rate of a reaction. Which DECREASES the frequency of collision between reactant particles? [rr-1]

For reactions involving gaseous reactants, decrease the pressure of the gases

For reactions involving solutions, raise the concentration of the solution

If a solid is reacting with a liquid, break the solid into smaller pieces

Raise the temperature of the reaction mixture

For reactions to occur, the particles of the reactants must collide. The fewer the collisions that take place, the slower the rate of reaction. Which DECREASES the frequency of collision between reactant particles? [rr-2]

For reactions involving gaseous reactants, increase the pressure of the gases

For reactions involving solutions, decrease the concentration of the solution

If a solid is reacting with a liquid, break the solid into smaller pieces

Raise the temperature of the reaction mixture

For reactions to occur, the particles of the reactants must collide. The fewer the collisions that take place, the slower the rate of reaction. Which INCREASES the frequency of collision between reactant particles? [rr-3]

For reactions involving gaseous reactants, decrease the pressure of the gases

For reactions involving solutions, decrease the concentration of the solution

If a solid is reacting with a liquid, break the solid into smaller pieces

Lower the temperature of the reaction mixture

For reactions to occur, the particles of the reactants must collide. The fewer the collisions that take place, the slower the rate of reaction. Which INCREASES the frequency of collision between reactant particles? [rr-4]

For reactions involving gaseous reactants, decrease the pressure of the gases

For reactions involving solutions, decrease the concentration of the solution

If a solid is reacting with a liquid, use large pieces of the solid

Increase the temperature of the reaction mixture

Calcium carbonate in the form of limestone dissolves in hydrochloric acid and giving off carbon dioxide gas. Which conditions would produce the fastest reaction? [rr-5]

temperature of 40°C and 10cm3 of dilute acid

temperature of 20°C and 10cm3 of dilute acid

temperature of 40°C and 5cm3 of dilute acid and 5cm3 of water

temperature of 20°C and 5cm3 of dilute acid and 5cm3 of water

Calcium carbonate in the form of limestone dissolves in hydrochloric acid and giving off carbon dioxide gas. Which conditions would produce the slowest reaction? [rr-6]

temperature of 40°C and 10cm3 of dilute acid

temperature of 20°C and 10cm3 of dilute acid

temperature of 40°C and 5cm3 of dilute acid and 5cm3 of water

temperature of 20°C and 5cm3 of dilute acid and 5cm3 of water

Iron reacts with hydrochloric acid to form iron(II) chloride and hydrogen gas. 2g of iron is added to 100cm3 of dilute hydrochloric acid. Which conditions produces the fastest reaction? [rr-7]

iron pieces at 25°C

iron pieces at 50°C

iron powder at 25°C

iron powder at 50°C

Iron reacts with hydrochloric acid to form iron(II) chloride and hydrogen gas. 2g of iron is added to 100cm3 of dilute hydrochloric acid. Which conditions produces the slowest reaction? [rr-8]

iron pieces at 25°C

iron pieces at 50°C

iron powder at 25°C

iron powder at 50°C

A group of students carried out an experiment in which they added manganese dioxide to rapidly decompose a solution of hydrogen peroxide. To show that the manganese dioxide was acting as a catalyst, what must they do before and after the experiment? [rr-9]

BEFORE: weigh the hydrogen peroxide solution and manganese dioxide in separate containers before mixingAFTER: weigh both of the containers again

BEFORE: weigh the hydrogen peroxide solution in a beaker and then add the manganese dioxide to the beakerAFTER: weigh the beaker and its contents

BEFORE: weigh the manganese dioxide and then add the hydrogen peroxide solution to the beakerAFTER: weigh the beaker and its contents

BEFORE: weigh the manganese dioxide and a dry filter paperAFTER: filter the solution, dry the filter paper and the solid residue, weigh the filter paper

When marble chips dissolve in acid, the reaction can be speeded up by? [rr-10]

grinding the marble chips

lowering the temperature

using a larger flask

using more dilute acid

When marble chips dissolve in acid, the reaction can be slowed down by? [rr-11]

grinding the marble chips

lowering the temperature

using a larger flask

using more dilute acid

Copper(II) oxide catalyses the decomposition of hydrogen peroxide to form oxygen.In acting as a catalyst the copper(II) oxide? [rr-12]

causes the decomposition to begin

increases the total amount of oxygen formed

increases the rate at which oxygen is formed

prevents the decomposition of the oxygen formed

Which mixture will enable the fastest reaction to take place between solid calcium carbonate (marble chips) and dilute hydrochloric acid? [rr-13]

large chips, concentrated acid, low temperature

low temperature, small chips, dilute acid

concentrated acid, high temperature, small chips

high temperature, small chips, dilute acid

Which mixture will produce the slowest reaction to take place between solid calcium carbonate (marble chips) and dilute hydrochloric acid? [rr-14]

large chips, concentrated acid, low temperature

low temperature,
large chips, dilute acid

concentrated acid, high temperature, small chips

high temperature, small chips, dilute acid

Platinum catalyses the reaction between
sulfur dioxide SO2 and oxygen O2 to form sulfur trioxide SO3. Which of the statements 1, 2 or 3 is/are correct? [rr-15]1. more
sulfur trioxide is formed when more catalyst is used2. the catalyst increases the rate of reaction between
sulfur dioxide and oxygen3. when the reaction is complete the platinum catalyst has not lost any mass

1 and 2

1 and 3

2 and 3

1, 2 and 3

Platinum catalyses the reaction between
sulfur dioxide SO2 and oxygen O2 to form sulfur trioxide SO3. Which statement(s) 1, 2 or 3 is NOT correct? [rr-16]1. less
sulfur trioxide is formed when more catalyst is used2. the catalyst decreases the rate of reaction between
sulfur dioxide and oxygen3. when the reaction is complete the platinum catalyst has gained mass

only 1

only 1 and 3

only 2 and 3

1, 2 and 3

The rate of reaction between acid and marble chips can be decreased by? [rr-17]

warming

stirring

using larger chips

using more acid

A small quantity of marble chips is added to a large excess acid. Carbon dioxide gas is formed. Which will double the amount of carbon dioxide formed? [rr-18]

mass of acid

mass of marble chips

mass of water

volume of acid

Limestone reacts with hydrochloric acid to produce carbon dioxide. A student set up four experiments A to D. Which experiment would you expect to go the fastest? [rr-19]

limestone powder, dilute acid at 20°C

limestone lumps, dilute acid at 40°C

limestone lumps, concentrated acid at 20°C

limestone powder, concentrated acid at 40°C

Limestone reacts with hydrochloric acid to produce carbon dioxide. A student set up four experiments A to D. Which experiment would you expect to go the slowest? [rr-20]

limestone powder, dilute acid at 20°C

limestone lumps, dilute acid at 20°C

limestone lumps, concentrated acid at 40°C

limestone powder, concentrated acid at 40°C

A small quantity of calcium carbonate is added to a large excess acid. Carbon dioxide gas is formed. Which of the following will halve the amount of carbon dioxide formed? [rr-21]

doubling the temperature of the acid

doubling the volume of acid

halving the mass of the acid

halving the mass of the calcium carbonate

Sodium thiosulfate solution reacts with hydrochloric acid to form sodium chloride,
sulfur dioxide, sulfur and water. The reaction can be followed by measuring the time it takes for enough of the
sulfur precipitate to form to obscure a black cross marked on white paper. Which will decrease the time it takes for the black cross to disappear? [rr-22]

increase the concentration of the hydrochloric acid

decrease the concentration of the sodium thiosulfate

cool the mixture

add more water to the mixture

Sodium thiosulfate solution reacts with hydrochloric acid to form sodium chloride,
sulfur dioxide, sulfur and water. The reaction can be followed by measuring the time it takes for enough of the
sulfur precipitate to form to obscure a black cross marked on white paper. Which will decrease the time it takes for the black cross to disappear? [rr-23]

decrease the concentration of the hydrochloric acid

increase the concentration of the sodium thiosulfate

cool the mixture

add more water to the mixture

Sodium thiosulfate solution reacts with hydrochloric acid to form sodium chloride,
sulfur dioxide, sulfur and water. The reaction can be followed by measuring the time it takes for enough of the
sulfur precipitate to form to obscure a black cross marked on white paper. Which will decrease the time it takes for the black cross to disappear? [rr-24]

decrease the concentration of the hydrochloric acid

decrease the concentration of the sodium thiosulfate

heat the mixture

add more water to the mixture

An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but using 0.2g of limestone lumps. Which of the graphs W, X, Y or Z might you expect for the results? [rr-25]

graph line W

graph line X

graph line Y

graph line Z

An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but using 0.4g of the same limestone granules. Which of the graphs W, X, Y or Z might you expect for the results? [rr-26]

graph line W

graph line X

graph line Y

graph line Z

An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but using acid of 2.0mol/dm3 concentration. Which of the graphs W, X, Y or Z might you expect for the results? [rr-27]

graph line W

graph line X

graph line Y

graph line Z

An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but using 0.1g of the same limestone granules. Which of the graphs W, X, Y or Z might you expect for the results? [rr-28]

graph line W

graph line X

graph line Y

graph line Z

An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but at a temperature of 50oC. Which of the graphs W, X, Y or Z might you expect for the results? [rr-29]

graph line W

graph line X

graph line Y

graph line Z

An experiment was carried out at a temperature of 25oC by dissolving 0.2g of small limestone granules into 30cm3 of hydrochloric acid. The acid concentration was 1.0 mol/dm3 and in excess so all the limestone dissolved. The reaction was followed by measuring the volume of carbon dioxide given off over a period of 6 minutes. A 2nd experiment was done in an identical manner but using acid of 0.5mol/dm3 concentration. Which of the graphs W, X, Y or Z might you expect for the results? [rr-30]

graph line W

graph line X

graph line Y

graph line Z

Which will react the fastest with hydrochloric acid? [rr-31]

marble chips at 40oC

marble chips at 25oC

powdered marble at 40oC

powdered marble at 25oC

Which will react the slowest with hydrochloric acid? [rr-32]

marble chips at 40oC

marble chips at 25oC

powdered marble at 40oC

powdered marble at 25oC

An acid reacts with some tablets. The rate of reaction is decreased by? [rr-33]

cooling the tablets and the acid

crushing the tablets before adding the acid

stirring the tablets in the acid

using a more concentrated acid

A catalyst can increase the rate of a chemical reaction.Which of the following is also TRUE about catalysts? [rr-34]

their appearance is unchanged at the end of the reaction

they have to be a metal

they have to be a solid

they are chemically the same at the end of the reaction

A large amount of calcium carbonate (excess) is added to a small amount of dilute hydrochloric acid. Which will double the volume of carbon dioxide finally formed? [rr-35]

doubling the mass of calcium carbonate

doubling the volume of the hydrochloric acid

halving the mass of the hydrochloric acid

doubling the temperature

A large amount of calcium carbonate (excess) is added to a small amount of dilute hydrochloric acid. Which will double the volume of carbon dioxide finally formed? [rr-36]

doubling the mass of calcium carbonate

halving the volume of the hydrochloric acid

doubling the temperature

doubling the concentration of the acid

A large amount of calcium carbonate (excess) is added to a small amount of dilute hydrochloric acid. Which will halve the volume of carbon dioxide finally formed? [rr-37]

halving the mass of calcium carbonate

halving the volume of the hydrochloric acid

halving the temperature

doubling the concentration of the acid

A large amount of calcium carbonate (excess) is added to a small amount of dilute hydrochloric acid. Which will halve the volume of carbon dioxide finally formed? [rr-38]

doubling the mass of calcium carbonate

doubling the volume of the hydrochloric acid

halving the temperature

halving the concentration of the acid

Potatoes cook more quickly in boiling vegetable oil than in boiling water. This is because oil? [rr-39]

boils at a higher temperature than water

catalyses the cooking process

contains water

replaces the water in the potatoes

In a rates experiment the following carbon dioxide gas volumes were recorded by a student resulting from an acid-limestone reaction. The gas volume of CO2 formed at 1.5 min was omitted by accident.

time (min)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

Vol (cm3)

0

8

15

?

26

30

33

36

38

39

40

40

40

What is the most likely value of the missing reading in cm3 of carbon dioxide? [rr-40]

18

21

23

24

In a rates experiment the following carbon dioxide gas volumes were recorded by a student resulting from an acid-limestone reaction.

time (min)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

Vol (cm3)

0

8

15

21

26

30

33

36

38

39

40

40

40

At what time did the reaction stop? [rr-41]

4.5 min

6.0 min

5.0 min

5.5 min

In a rates experiment the following carbon dioxide gas volumes were recorded by a student resulting from an acid-limestone reaction.

time (min)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

Vol (cm3)

0

8

15

21

26

30

33

36

38

39

40

40

40

At what approximate time is the speed of the reaction 8cm3gas/min? [rr-42]

2.0 to 2.5 min

0.0 t0 0.5 min

1.0 to 1.5 min

5.0 to 5.5 min

A gas was produced in a chemical reaction. The total volume of gas formed was measured at regular time intervals. Which graph would you expect the results to be like? [rr-43]

graph Q

graph W

graph Y

graph Z

Which is a chemical test for the gas hydrogen? [rr-44]

pops with lit splint

turns limewater cloudy

relights a glowing splint

bleaches damp litmus paper

Which is a chemical test for the gas carbon dioxide? [rr-45]

pops with a lit splint

turns limewater cloudy

relights a glowing splint

bleaches damp litmus paper

Which is a chemical test for the gas oxygen? [rr-46]

pops with a lit splint

turns limewater cloudy

relights a glowing splint

bleaches damp litmus paper

Which is a chemical test for the gas chlorine? [rr-47]

pops with a lit splint

turns limewater cloudy

relights a glowing splint

bleaches damp litmus paper

Which of the following gases is formed when a metal reacts with an acid? [rr-48]

hydrogen

carbon dioxide

oxygen

chlorine

Which of the following gases is formed when an acid reacts with a carbonate? [rr-49]

hydrogen

carbon dioxide

oxygen

chlorine

Which of the following is formed when a metal reacts with an acid? [rr-50]

O2

Cl2

H2

CO2

Which of the following is formed when a carbonate reacts with an acid? [rr-51]

O2

Cl2

H2

CO2

A solid was produced in a chemical reaction. The total mass of solid formed was measured at regular time intervals. Which graph would you expect the results to be like? [rr-52]

graph Y

graph W

graph Q

graph Z

A solid and a liquid reacted to produce a solution. The mass of the solid reactant was measured at regular time intervals. Which graph would you expect the results to be like? [rr-53]

graph W

graph Q

graph Y

graph Z

Two solids were heated and reacted to form another solid. The total mass of the solids was measured at regular time intervals. Which graph would you expect the results to be like? [rr-54]

graph W

graph Q

graph Y

graph Z

On mixing two reacting solutions a solid precipitate was formed. The mass of the solid precipitate was measured at regular time intervals. Which graph would you expect the results to be like? [rr-55]

graph W

graph Q

graph Y

graph Z

Limestone chips were reacted with acid in a beaker placed on a one pan electric balance. The mass of the reacting mixture was measured at regular time intervals. Which graph would you expect the results to be like? [rr-56]

graph W

graph Q

graph Y

graph Z

An experiment was carried out to dissolve small limestone granules into hydrochloric acid. Carbon dioxide gas is formed and was collected in a gas syringe. The initial results are marked as the 'original experiment'. The experiment was repeated after varying the reaction conditions (ie mass of limestone, size of limestone pieces, temperature or acid concentration). The speed of the reaction can be given in cm3/min, ie the speed at which carbon dioxide is formed. Which experiment is going at an approximate average speed of 30 cm3/min in the first half minute of the reaction? [rr-57]

graph line for experiment W

graph line for experiment X

graph line for experiment Y

graph line for experiment Z

An experiment was carried out to dissolve small limestone granules into hydrochloric acid. Carbon dioxide gas is formed and was collected in a gas syringe. The initial results are marked as the 'original experiment'. The experiment was repeated after varying the reaction conditions (ie mass of limestone, size of limestone pieces, temperature or acid concentration). The speed of the reaction can be given in cm3/min, ie the speed at which carbon dioxide is formed. Which experiment is going at an approximate average speed of 22 cm3/min in the first half minute of the reaction? [rr-58]

graph line for experiment W

graph line for experiment X

graph line for experiment Y

graph line for experiment Z

An experiment was carried out to dissolve small limestone granules into hydrochloric acid. Carbon dioxide gas is formed and was collected in a gas syringe. The initial results are marked as the 'original experiment'. The experiment was repeated after varying the reaction conditions (ie mass of limestone, size of limestone pieces, temperature or acid concentration). The speed of the reaction can be given in cm3/min, ie the speed at which carbon dioxide is formed. Which experiment is going at an approximate average speed of 6 cm3/min in the first minute of the reaction? [rr-59]

graph line for experiment W

graph line for experiment X

graph line for experiment Y

graph line for experiment Z

An experiment was carried out to dissolve small limestone granules into hydrochloric acid. Carbon dioxide gas is formed and was collected in a gas syringe. The initial results are marked as the 'original experiment'. The experiment was repeated after varying the reaction conditions (ie mass of limestone, size of limestone pieces, temperature or acid concentration). The speed of the reaction can be given in cm3/min, ie the speed at which carbon dioxide is formed. Which experiment is going at an approximate average speed of 3 cm3/min in the first minute of the reaction? [rr-60]

graph line for experiment W

graph line for experiment X

graph line for experiment Y

graph line for experiment Z

What would you increase, to increase the kinetic energy of particles involved in a chemical reaction? [rsa-1]

What would you decrease, to decrease the kinetic energy of particles involved in a chemical reaction? [rsa-2]

What must particles do with each other before they can react? [rsa-3]

What do you increase to make two gases react together faster at the same temperature? [rsa-4]

What do you decrease to make two gases react together more slowly at the same temperature? [rsa-5]

Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). Which of 1 to 5 is seen as the 'fizzing'? [rsa-6]

Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). Which of 1 to 5 is the 'salt' in the reaction? [rsa-7]

Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). Which of 1 to 5 has the formula HCl? [rsa-8]

Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). Which of 1 to 5 has the formula CaCO3? [rsa-9]

Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). Which of 1 to 5 has the formula CaCl2? [rsa-10]

Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). In what form would you add the marble to speed up the reaction? [rsa-11]

Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). In what form would you add the marble to slow down the reaction? [rsa-12]

Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). What could you reduce for the acid to slow the reaction down at the same temperature? [rsa-13]

Limestone or marble chips are made of the chemical calcium carbonate (1). They both dissolve in hydrochloric acid (2), to produce a solution of calcium chloride (3), water (4) and carbon dioxide (5). What could you increase for the acid to speed up the reaction at the same temperature? [rsa-14]

Calcium carbonate (limestone) were dissolved in hydrochloric acid under five different experimental conditions.

The carbon dioxide gas formed was collected in a gas syringe and the total volume of gas was recorded for the first six minutes.

The speed or 'rate of reaction' can be expressed as the rate of formation of carbon dioxide in cm3/min.

What is the average speed of the reaction in experiment W between 1 and 2 minutes in cm3/min? [rsa-15]

Calcium carbonate (limestone) were dissolved in hydrochloric acid under five different experimental conditions.

The carbon dioxide gas formed was collected in a gas syringe and the total volume of gas was recorded for the first six minutes.

The speed or 'rate of reaction' can be expressed as the rate of formation of carbon dioxide in cm3/min.

What is the average speed of the reaction in experiment X in the first half minute in cm3/min? [rsa-16]

The reaction illustrated produces ...? [ab-1]

a salt + water

a salt only

a salt and hydrogen

water only

The type of reaction illustrated is called ...? [ab-2]

decomposition

neutralisation

displacement

oxidation

To produce sodium
sulfate by the reaction illustrated you need ...? [ab-3]

potassium
sulfate + sodium hydroxide

sodium chloride +
sulfuric acid

sodium hydroxide +
sulfuric acid

sodium hydroxide + hydrochloric acid

In the reaction illustrated, in order to add the correct amount of acid you would add a few drops of Universal Indicator and add acid until the indicator in the conical flask was ...? [ab-4]

blue

orange

yellow

green

In the reaction illustrated, in order to add the correct amount of acid you would add a few drops of Universal Indicator to the conical flask. If too little acid was added the indicator colour could be? [ab-5]

blue

orange

yellow

green

In the reaction illustrated, in order to add the correct amount of acid you would add a few drops of Universal Indicator to the conical flask. If too much acid was added the indicator colour could be? [ab-6]

blue

orange

purple

green

To produce potassium chloride by the reaction illustrated you need ...? [ab-7]

potassium
sulfate + hydrochloric acid

sodium chloride + potassium hydroxide

potassium hydroxide + hydrochloric acid

sodium hydroxide + hydrochloric acid

To produce lithium nitrate by the reaction illustrated you need ...? [ab-8]

lithium
sulfate + nitric acid

sodium nitrate + lithium hydroxide

potassium nitrate + lithium hydroxide

lithium hydroxide + nitric acid

The diagram shows a method of preparing salts.Which of the following will forms when a transition metal oxide reacts with hydrochloric acid? [ab-9]

transition metal chloride + water

transition metal chloride + hydrogen

transition metal chloride only

water only

The diagram shows a method of preparing salts from reacting an insoluble metal oxide and an acid.This type of reaction is called? [ab-10]

electrolysis

neutralisation

reduction

displacement

The diagram shows a method of preparing salts by reacting an insoluble metal oxide with an acid.How can you tell when all the acid has been used up before filtering the mixture? [ab-11]

universal indicator will give a yellow colour in the acid

universal indicator will give a pale blue colour in the acid

no more of the metal oxide will dissolve in the acid

the solution will go clear

The diagram shows a method of preparing salts.Which of the following will form a transition metal
sulfate and hydrogen? [ab-12]

transition metal oxide +
sulfuric acid

transition metal + sodium
sulfate

transition metal hydroxide + potassium
sulfate

transition metal +
sulfuric acid

Which is the strongest base or alkali? [ab-13]

limewater

baking soda

vinegar

wine

Which is the weakest base or alkali? [ab-14]

limewater

baking soda

vinegar

wine

Which is the strongest acid? [ab-15]

limewater

baking soda

vinegar

wine

Which is the weakest acid? [ab-16]

limewater

baking soda

vinegar

wine

Which of the following can be mixed to form a neutral solution? [ab-17]

limewater and fizzy drink

baking soda and toothpaste

vinegar and wine

calomine lotion and common salt

Which of the following can be mixed to form a neutral solution? [ab-18]

limewater and washing soda

baking soda and wine

vinegar and common salt

ammonia and limewater

Which of the following can be safely used to treat an acid bee sting? [ab-19]

limewater

wine

calomine lotion

common salt

Which of the following can be safely used to treat an alkaline wasp sting? [ab-20]

calomine lotion

vinegar

washing soda

common salt

Which of the following is most likely to be part of an ant-acid indigestion medicine? [ab-21]

sodium hydrogencarbonate

ammonia

washing soda

limewater

Which of the following is the safest to use to treat an acid nettle sting? [ab-22]

wine

sodium hydrogencarbonate

washing soda

limewater

A small amount of a dense white powder was mixed with water in a test tube. Non of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned blue. This meant the white powder was ...? [ab-23]

a soluble neutral substance

a slightly soluble acid

a very soluble alkali

a slightly soluble alkali

A small amount of a dense white powder was mixed with water in a test tube. Some of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned blue. This meant the white powder was ...? [ab-24]

a soluble neutral substance

a slightly soluble acid

a very soluble alkali

a slightly soluble alkali

A small amount of a dense white powder was mixed with water in a test tube. Non of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned green. This meant the white powder was ...? [ab-25]

a soluble neutral substance

a slightly soluble acid

a slightly soluble neutral substance

a slightly soluble alkali

A small amount of a dense white powder was mixed with water in a test tube. Some of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned green. This meant the white powder was ...? [ab-26]

a soluble acidic substance

a slightly soluble neutral substance

a soluble acidic substance

a slightly soluble alkali

A small amount of a dense white powder was mixed with water in a test tube. Non of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned orange. This meant the white powder was ...? [ab-26]

a soluble weak alkali

a very soluble neutral substance

a soluble weak acid

a slightly soluble strong acid

A small amount of a dense white powder was mixed with water in a test tube. Some of the white powder sank to the bottom of the test tube. A few drops of universal indicator were added and the solution turned red. This meant the white powder was ...? [ab-26]

Given the following neutralisation equation:NaOH(aq) + HCl(aq) ==> NaCl(aq) + H2O(l)Which is the alkali? [ab-89]

NaOH

HCl

NaCl

H2O

Given the following neutralisation equation:NaOH(aq) + HCl(aq) ==> NaCl(aq) + H2O(l)Which is the acid? [ab-90]

NaOH

HCl

NaCl

H2O

Given the following neutralisation equation:NaOH(aq) + HCl(aq) ==> NaCl(aq) + H2O(l)Which is the salt? [ab-91]

NaOH

HCl

NaCl

H2O

Given the following neutralisation equation:NaOH(aq) + HCl(aq) ==> NaCl(aq) + H2O(l)Which is the base? [ab-92]

H2O

HCl

NaCl

NaOH

Which two reactants would you use to make potassium nitrate? [ab-101]

nitric acid and potassium hydroxide

sodium
nitrate and potassium chloride

sulfuric acid and sodium nitrate

nitric acid and sodium hydroxide

Insoluble metal oxides and metal hydroxides (bases) will not dissolve to form an alkaline solution. But they will dissolve in acids to give the same reaction as with alkalis. This method is particularly handy for making transition metal salts. Which reaction will produce a transition metal chloride and hydrogen? [ab-102]

transition metal oxide + sodium chloride

transition metal + hydrochloric acid

transition metal hydroxide + hydrochloric acid

transition metal +
sulfuric acid

Insoluble metal oxides and metal hydroxides (bases) will not dissolve to form an alkaline solution. But they will dissolve in acids to give the same reaction as with alkalis. This method is particularly handy for making transition metal salts. When sufficient base has been added so that no more dissolves, how is the excess base removed? [ab-103]

boiling

distillation

filtration

crystallisation

Insoluble metal oxides and metal hydroxides (bases) will not dissolve to form an alkaline solution. But they will dissolve in acids to give the same reaction as with alkalis. This method is particularly handy for making transition metal salts. When sufficient base has been added so that no more dissolves. How could you test that all the acid was neutralised? [ab-104]

see if crystals form on evaporating the solution

see if the solution is clear

measure the boiling point of the solution

use indicator paper

Insoluble bases and metals will not dissolve to form an alkaline solution, but they will dissolve in acids to form salts. This method is particularly handy for making transition metal salts. What pair of chemicals will make cobalt
sulfate and water? [ab-105]

cobalt oxide +
sulfuric acid

cobalt + hydrochloric acid

cobalt + nitric acid

cobalt hydroxide + nitric acid

Insoluble bases and metals will not dissolve to form an alkaline solution, but they will dissolve in acids to form salts. This method is particularly handy for making transition metal salts. What pair of chemicals will make cobalt chloride and hydrogen? [ab-106]

cobalt oxide +
sulfuric acid

cobalt + hydrochloric acid

cobalt hydroxide + sodium chloride

cobalt hydroxide + nitric acid

Which two reactants make ammonium chloride and water? [ab-107]

ammonium
sulfate and hydrochloric acid

ammonium hydroxide and sodium chloride

ammonium hydroxide and hydrochloric acid

ammonia and potassium chloride

Which of these gives an alkaline solution when dissolved in water? [ab-108]

aluminium hydroxide

copper hydroxide

iron hydroxide

ammonia (ammonium hydroxide)

Which of these gives an alkaline solution when dissolved in water? [ab-109]

sodium hydroxide

copper hydroxide

iron hydroxide

aluminium hydroxide

Which of these gives an alkaline solution when dissolved in water? [ab-109]

nickel hydroxide

potassium hydroxide

iron hydroxide

magnesium hydroxide

Which of A to D completes the equation ..?.. [ab-111]..?.. + potassium hydroxide ==> potassium
sulfate + water

potassium nitrate

calcium hydroxide

sulfuric acid

sodium chloride

Which of A to D completes the equation ..?.. [ab-112]hydrochloric acid + sodium hydroxide ==> ..?.. + water

sodium
sulfate

potassium chloride

calcium chloride

sodium chloride

Which of A to D completes the equation ..?.. [ab-113]..?.. + nitric acid ==> ammonium nitrate

ammonia (ammonium hydroxide)

calcium hydroxide

ammonium
sulfate

sodium nitrate

Which of A to D completes the equation ..?.. [ab-114]
sulfuric acid + ..?.. ==> calcium sulfate + water